Hi - we’ve always had 2 or 3 pairs nesting here and a hand full of young flying about but over the last week it’s been like a swarm
they usually mass here just before they migrate but never had so many as the last week - hot weather ? Or are they like adolescents who gather around not sure ? Put a few buckets of water out side if that helps - not sure if there is anything I can do to feed them etc
This is a picture of a few on the telegraph lines but their everywhere